Retiring the 4% Rule A portfolio created with your long-term objectives in mind is crucial as you pursue your dream retirement. Share | Related Content 18 Years’ Worth of Days The average retirement lasts for 18 years, with many lasting even longer. Will you fill your post-retirement days with purpose? Retirement Questions That Have Nothing to Do With Money Things to consider before retirement. Inflation & Retirement Estimate how much income may be needed at retirement to maintain your standard of living.